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A025218 [ Sum{sqrt(k+1)} ], k = 1,2,...,n. 0
1, 3, 5, 7, 9, 12, 15, 18, 21, 24, 28, 31, 35, 39, 43, 47, 51, 56, 60, 65, 69, 74, 79, 84, 89, 94, 100, 105, 111, 116, 122, 128, 133, 139, 145, 151, 158, 164, 170, 177, 183, 190, 196, 203, 210, 217, 223, 230, 238, 245, 252, 259, 267, 274, 281, 289, 297, 304, 312, 320, 328, 336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..62.

PROG

(PARI) a(n) = floor(sum(k=1, n, sqrt(k+1))) \\ Michel Marcus, Mar 24 2013

CROSSREFS

Sequence in context: A309269 A204206 A080751 * A258782 A007078 A226332

Adjacent sequences:  A025215 A025216 A025217 * A025219 A025220 A025221

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 20 12:43 EDT 2019. Contains 327238 sequences. (Running on oeis4.)