login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A257606 Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = x + 4. 5
1, 4, 4, 6, 40, 16, 64, 296, 296, 64, 256, 1928, 3552, 1928, 256, 1024, 11688, 34808, 34808, 11688, 1024, 4096, 67656, 302352, 487312, 302352, 67656, 4096, 16384, 379240, 2423016, 5830000, 5830000, 2423016, 379240, 16384, 65536, 2076424, 18330496, 62617144, 93280000, 62617144, 18330496, 2076424, 65536 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums are: 1, 8, 72, 720, 7920, 95040, ... (see A049388).

LINKS

Table of n, a(n) for n=0..44.

EXAMPLE

1

4 4

16 40 16

64 296 296 64

256 1928 3552 1928 256

1024 11688 34808 34808 11688 1024

4096 67656 302352 487312 302352 67656 4096

16384 379240 2423016 5830000 5830000 2423016 379240 16384

65536 2076424 18330496 62617144 93280000 62617144 18330496 2076424 65536

CROSSREFS

Cf. A008292, A256890, A257180, A257607

Cf. A257613, A257622

Similar sequences listed in A256890.

Sequence in context: A158661 A264578 A261146 * A090531 A198138 A240924

Adjacent sequences:  A257603 A257604 A257605 * A257607 A257608 A257609

KEYWORD

nonn,tabl

AUTHOR

Dale Gerdemann, May 03 2015

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 19 07:39 EST 2018. Contains 299330 sequences. (Running on oeis4.)