KeepRemoveFlag/pentagonal

HTML	RESULT
{sequence 25, push='mySequence'}
{pull mySequence, make, pentagonal} {$sequence} {/pull}	1 5 12 22 35 51 70 92 117 145 176 210 247 287 330 376 425 477 532 590 651 715 782 852 925
{pull mySequence, keep, pentagonal} {$sequence} {/pull}	1 5 12 22
{pull mySequence, remove, pentagonal} {$sequence} {/pull}	2 3 4 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 23 24 25
{pull mySequence, flag, pentagonal} {$sequence} {/pull}	1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0