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A027100
Diagonal sum of left justified array T given by A027082.
0
1, 1, 2, 3, 3, 6, 8, 11, 17, 25, 34, 53, 76, 107, 163, 236, 335, 506, 734, 1050, 1575, 2290, 3291, 4915, 7156, 10321, 15362, 22392, 32381, 48075, 70135, 101633, 150591, 219843, 319101, 472067, 689535, 1002196, 1480703, 2163798, 3148403, 4646697, 6792904, 9892961, 14588004
OFFSET
0,3
FORMULA
a(n) = Sum_{k=0..n} A027052(n-k, k). - Sean A. Irvine, Oct 23 2019
CROSSREFS
Sequence in context: A020878 A158278 A187505 * A346030 A261090 A183560
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 23 2019
STATUS
approved