Extended Nette framework paginator, which allows different items count on first page.
composer require premekkoch/pkpaginator
Use PkPaginator instead of Nette\Utils\Paginator by the same way. For different items count on first page, set this count by calling setItemsOnFirstPage();. If you don't do this, PkPaginator works with original behavior of Nette\Utils\Paginator with same items count on each page.
$paginator = new PremekKoch\PkPaginator();
$paginator->setItemCount(356); // total number of items
$paginator->setItemsOnFirstPage(5); // items count on first page
$paginator->setItemsPerPage(30); // items per 2nd and next pages
$paginator->setPage(1); // actual page number