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A104795
Triangle T(n,k) = C(n,k)+1 for k<n; T(n,k) = 1 for k=n, read by rows.
0
1, 2, 1, 2, 3, 1, 2, 4, 4, 1, 2, 5, 7, 5, 1, 2, 6, 11, 11, 6, 1, 2, 7, 16, 21, 16, 7, 1, 2, 8, 22, 36, 36, 22, 8, 1, 2, 9, 29, 57, 71, 57, 29, 9, 1, 2, 10, 37, 85, 127, 127, 85, 37, 10, 1, 2, 11, 46, 121, 211, 253, 211, 121, 46, 11, 1, 2, 12, 56, 166, 331, 463, 463, 331, 166, 56, 12, 1
OFFSET
0,2
EXAMPLE
First few rows of the triangle are:
1;
2, 1;
2, 3, 1;
2, 4, 4, 1;
2, 5, 7, 5, 1;
2, 6, 11, 11, 6, 1;
2, 7, 16, 21, 16, 7, 1;
2, 8, 22, 36, 36, 22, 8, 1;
...
CROSSREFS
Row sums are in A006127. Cf. A007318.
Sequence in context: A259324 A216274 A145111 * A347570 A116925 A309010
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Mar 26 2005
EXTENSIONS
Edited by Ralf Stephan, Apr 05 2009
a(28) = 28 replaced by 2, 8 by Georg Fischer, Apr 09 2022
STATUS
approved