A173815 Sum of the numbers in the n-th row of Gilbreath's triangle (A036261).

1, 3, 3, 9, 7, 9, 7, 9, 11, 19, 17, 15, 9, 15, 13, 29, 23, 27, 33, 23, 29, 21, 31, 31, 35, 25, 27, 27, 41, 89, 57, 67, 51, 63, 49, 49, 49, 43, 39, 51, 39, 63, 47, 65, 45, 75, 95, 71, 67, 79, 59, 61, 59, 73, 61, 65, 77, 73, 75, 63, 95, 81, 87, 71, 103, 107, 85, 85, 101, 87, 71

Offset

1,2

Links

Table of n, a(n) for n=1..71.

Maple

A036261 := proc(n, k) option remember ; if k = n then ithprime(n+1)-ithprime(n) ; else abs(procname(n, k+1)-procname(n-1, k)) ; end if; end proc: A173815 := proc(n) add(A036261(n, k), k=1..n) ; end proc: seq(A173815(n), n=1..90) ; # R. J. Mathar, Mar 01 2010

Crossrefs

Cf. A036261, A036262.

Sequence in context: A375069 A065483 A019745 * A188615 A328566 A362046

Adjacent sequences: A173812 A173813 A173814 * A173816 A173817 A173818

Keyword

nonn

Author

Juri-Stepan Gerasimov, Feb 25 2010

Extensions

a(10), a(22) etc. corrected and sequence extended by R. J. Mathar, Mar 01 2010

Status

approved