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A102378 a(n) = a(n-1) + a([n/2]) + 1, a(1) = 1. 2
1, 3, 5, 9, 13, 19, 25, 35, 45, 59, 73, 93, 113, 139, 165, 201, 237, 283, 329, 389, 449, 523, 597, 691, 785, 899, 1013, 1153, 1293, 1459, 1625, 1827, 2029, 2267, 2505, 2789, 3073, 3403, 3733, 4123, 4513, 4963, 5413, 5937, 6461, 7059, 7657, 8349 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..48.

FORMULA

a(n) - a(n-1) = A018819(n+1)

G.f. A(x) satisfies (1-x)*A(x) = 2(1 + x)*B(x^2), where B(x) is the gf of A033485

CROSSREFS

Cf. A000123, A033485.

Sequence in context: A080827 A200919 A213207 * A118026 A248956 A108754

Adjacent sequences:  A102375 A102376 A102377 * A102379 A102380 A102381

KEYWORD

nonn

AUTHOR

Mitch Harris, Jan 05 2005

STATUS

approved

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Last modified October 16 12:59 EDT 2018. Contains 316263 sequences. (Running on oeis4.)