KeepRemoveFlag/pell

HTML	RESULT
{sequence 25, push='mySequence'}
{pull mySequence, make, pell} {$sequence} {/pull}	1 2 5 12 29 70 169 408 985 2378 5741 13860 33461 80782 195025 470832 1136689 2744210 6625109 15994428 38613965 93222358 225058681 543339720 1311738121
{pull mySequence, keep, pell} {$sequence} {/pull}	1 2 5 12
{pull mySequence, remove, pell} {$sequence} {/pull}	3 4 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 22 23 24 25
{pull mySequence, flag, pell} {$sequence} {/pull}	1 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0