OFFSET
1,2
FORMULA
T(n,m) = (11^n + 11^m) / 2, n = 0, 1, 2, 3 ..., m = 0, 1, 2, 3, ... n.
EXAMPLE
a(4) = 61 = (11^2+11^0) / 2.
CROSSREFS
KEYWORD
AUTHOR
Jeremy Gardiner, Jul 21 2002
STATUS
approved