A175967 Lexicographically earliest sequence with first differences as increasing sequence of nonprimes A018252.

1, 2, 6, 12, 20, 29, 39, 51, 65, 80, 96, 114, 134, 155, 177, 201, 226, 252, 279, 307, 337, 369, 402, 436, 471, 507, 545, 584, 624, 666, 710, 755, 801, 849, 898, 948, 999, 1051, 1105, 1160, 1216, 1273, 1331, 1391, 1453, 1516, 1580, 1645, 1711, 1779

Offset

1,2

Comments

Complement of A175968.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Formula

a(n) - a(n-1) = A018252(n-1) for n >= 2.

Prog

(Haskell)
a175967 n = a175967_list !! n
a175967_list = scanl (+) 1 a018252_list
-- Reinhard Zumkeller, Mar 26 2015

Crossrefs

Cf. A175965, A175966, A175968, A014284, A175969, A051349, A175970.

Cf. A018252.

Sequence in context: A031426 A258633 A244362 * A254949 A034100 A034110

Adjacent sequences: A175964 A175965 A175966 * A175968 A175969 A175970

Keyword

nonn

Author

Jaroslav Krizek, Oct 31 2010

Status

approved