HTML RESULT 
{sequence 25, push='mySequence'}
{pull mySequence, make,   centeredSquare} {$sequence} {/pull}
1 5 13 25 41 61 85 113 145 181 221 265 313 365 421 481 545 613 685 761 841 925 1013 1105 1201
{pull mySequence, keep,   centeredSquare} {$sequence} {/pull}
1 5 13 25
{pull mySequence, remove, centeredSquare} {$sequence} {/pull}
2 3 4 6 7 8 9 10 11 12 14 15 16 17 18 19 20 21 22 23 24
{pull mySequence, flag,   centeredSquare} {$sequence} {/pull}
1 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1