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 A140648 Triangle T(n,m) which can create A140642 without help of Jacobsthal numbers. 0
 1, 2, 0, 4, 1, 0, 8, 2, 0, 1, 16, 4, 1, 0, 2, 32, 8, 2, 0, 1, 4, 64, 16, 4, 1, 0, 2, 8, 128, 32, 8, 2, 0, 1, 4, 16, 256, 64, 16, 4, 1, 0, 2, 8, 32, 512, 128, 32, 8, 2, 0, 1, 4, 16, 64 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS This triangle T(.,.) provides the additional terms if A140642 is constructed with a Pascal-type recurrence: A140642(n+1,m+1) = A140642(n,m) + A140642(n,m+1) + T(n,m+1). Note almost odd palindromes (of squares) followed by their double. Examples: 40=16+20+4, 42=20+21+1, 43=21+22+0, 44=22+24+2. LINKS FORMULA Southeast diagonals based on A131577 (which is also in A140531). First preceded with 1, 0. Second with 2, 1, 0. Tends towards even palindromes, second part being A131577. Verticals: A000079, A131577, (0, A131577), ... . EXAMPLE Triangle begins:     1;     2,  0;     4,  1,  0;     8,  2,  0,  1;    16,  4,  1,  0,  2;    32,  8,  2,  0,  1,  4;    64, 16,  4,  1,  0,  2,  8;   128, 32,  8,  2,  0,  1,  4, 16; CROSSREFS Cf. A083329 (row sums). Sequence in context: A255330 A291940 A153345 * A153342 A144258 A056859 Adjacent sequences:  A140645 A140646 A140647 * A140649 A140650 A140651 KEYWORD nonn,tabl,uned AUTHOR Paul Curtz, Jul 09 2008 STATUS approved

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Last modified April 9 15:27 EDT 2020. Contains 333360 sequences. (Running on oeis4.)