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A137174
First differences of A138383.
0
0, 6, 4, 25, -13, 37, -25, 49, 73, -98, 146, -49, -73, 97, 121, 36, -218, 266, -109, -133, 314, -133, 193, 229, -350, -193, 217, -205, 229, 1241, -1169, 289, -530, 1168, -1144, 626, 36, -301, 361, 36, -698, 1504, -1480, 397, -385, 2069, 144, -1708, -445, 469
OFFSET
1,2
MATHEMATICA
Differences[Join[{3}, (#[[2]]-#[[1]]) (Total[#]+1)/2&/@Partition[Prime[ Range[ 60]], 2, 1]]] (* Harvey P. Dale, Oct 27 2020 *)
CROSSREFS
Cf. A138383.
Sequence in context: A328757 A061592 A081631 * A129886 A133837 A211945
KEYWORD
easy,sign
AUTHOR
Odimar Fabeny, May 11 2008
EXTENSIONS
More terms from Harvey P. Dale, Oct 27 2020
STATUS
approved