KeepRemoveFlag/icosihenagonal

HTML	RESULT
{sequence 25, push='mySequence'}
{pull mySequence, make, icosihenagonal} {$sequence} {/pull}	1 21 60 118 195 291 406 540 693 865 1056 1266 1495 1743 2010 2296 2601 2925 3268 3630 4011 4411 4830 5268 5725
{pull mySequence, keep, icosihenagonal} {$sequence} {/pull}	1 21
{pull mySequence, remove, icosihenagonal} {$sequence} {/pull}	2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 25
{pull mySequence, flag, icosihenagonal} {$sequence} {/pull}	1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0