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A270813
First differences of A003022.
4
2, 3, 5, 6, 8, 9, 10, 11, 17, 13, 21, 21, 24, 26, 22, 17, 30, 37, 50, 23, 16, 53, 55, 12, 61
OFFSET
2,1
COMMENTS
Surprisingly irregular.
CROSSREFS
Cf. A003022.
Sequence in context: A367917 A367908 A032953 * A247431 A039033 A047333
KEYWORD
nonn,hard,more
AUTHOR
N. J. A. Sloane, Apr 08 2016
STATUS
approved