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A107250 Diagonal sums of number array A107249. +0
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1, 1, 2, 3, 5, 9, 16, 30, 54, 104, 191, 372, 692, 1357, 2550, 5021, 9508, 18773, 35766, 70755, 135461, 268365, 515849, 1023092, 1973159, 3916831, 7575470, 15048428, 29175431, 57990158, 112665488, 224048847, 436089113, 867581269, 1691392152 (list; graph; listen)
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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.


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