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A131784
Triangle read by rows: (A004736 + A002260 - I) * A000012.
0
1, 5, 2, 11, 7, 3, 19, 14, 9, 4, 29, 23, 17, 11, 5, 41, 34, 27, 20, 13, 6, 55, 47, 39, 31, 23, 15, 7, 71, 62, 53, 44, 35, 26, 17, 8, 89, 79, 69, 59, 49, 39, 29, 19, 9, 109, 98, 87, 76, 65, 54, 43, 32, 21, 10, 131, 119, 107, 95, 83, 71, 59, 47, 35, 23, 11, 155, 142, 129, 116, 103, 90, 77, 64, 51, 38, 25, 12
OFFSET
1,2
FORMULA
Equals (A004736 + A002260 - I) * A000012, I = Identity matrix.
EXAMPLE
First few rows of the triangle:
1;
5, 2;
11, 7, 3;
19, 14, 9, 4;
29, 23, 17, 11, 5;
41, 34, 27, 20, 13, 6;
55, 47, 39, 31, 23, 15, 7;
...
CROSSREFS
Cf. A004736, A002260, A127736 (row sums), A028387 (left column).
Sequence in context: A163257 A332452 A176624 * A302773 A249369 A065268
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jul 16 2007
EXTENSIONS
a(35) corrected and more terms from Georg Fischer, Aug 09 2023
STATUS
approved