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A026152 a(n) = T(n,n-1), where T is the array in A026148. 0
1, 4, 10, 29, 81, 230, 652, 1854, 5278, 15048, 42956, 122772, 351300, 1006344, 2885952, 8285001, 23809113, 68490060, 197211394, 568385609, 1639635613, 4734036134, 13679894484, 39562904855, 114507905551, 331674931656, 961408814434 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

CROSSREFS

First differences of A026163.

Sequence in context: A164361 A006907 A052946 * A025179 A116388 A152808

Adjacent sequences:  A026149 A026150 A026151 * A026153 A026154 A026155

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 14 22:48 EST 2012. Contains 205682 sequences.