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A083075
Square array read by antidiagonals: T(n,k) = (k*(2*k+3)^n + 1)/(k+1).
10
1, 1, 1, 1, 3, 1, 1, 5, 13, 1, 1, 7, 33, 63, 1, 1, 9, 61, 229, 313, 1, 1, 11, 97, 547, 1601, 1563, 1, 1, 13, 141, 1065, 4921, 11205, 7813, 1, 1, 15, 193, 1831, 11713, 44287, 78433, 39063, 1, 1, 17, 253, 2893, 23801, 128841, 398581, 549029, 195313, 1, 1, 19, 321
OFFSET
0,5
LINKS
EXAMPLE
Array begins:
1 1 1 1 1 ...
1 3 13 63 313 ...
1 5 33 229 1601 ...
1 7 61 547 4921 ...
1 9 97 1065 11713 ...
...
MAPLE
T := proc(n, k) return (k*(2*k+3)^n+1)/(k+1): end: seq(seq(T(k, n-k), k=0..n), n=0..10); # Nathaniel Johnston, Jun 26 2011
CROSSREFS
Columns include odds, A082109, A083079.
Diagonals include A083079, A083080, A083081, A083082.
Sequence in context: A213998 A340970 A294946 * A335333 A341470 A293796
KEYWORD
easy,nonn,tabl
AUTHOR
Paul Barry, Apr 23 2003
STATUS
approved