cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A131910 Central terms of triangle A131909.

Original entry on oeis.org

1, 1, 3, 8, 26, 79, 274, 964, 3496, 12664, 46157, 168240, 615173, 2256669, 8321911, 30871862, 115280183, 433247309, 1638036186, 6225871432, 23769249188, 91077899373, 350002189936, 1348065993111, 5201249282212, 20094668668700
Offset: 0

Views

Author

Paul D. Hanna, Jul 26 2007

Keywords

Crossrefs

Cf. A131909.

Programs

  • PARI
    
				
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Formula

		

			
a(n) = A131909(2n,n) for n>=0.

		

	

	
	


		

		
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.
		
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